Citation: Yu Rong Ren, Shu Yong Jia, Shou Cai Zhang, Chun Ling Liu, Yun Cheng Cui. Stannous oxalate as a novel catalyst for the synthesis of polytrimethylene terephthalate[J]. Chinese Chemical Letters, ;2007, 18(7): 872-874. doi: 10.1016/j.cclet.2007.03.012 shu

Stannous oxalate as a novel catalyst for the synthesis of polytrimethylene terephthalate

Department of Chemistry, Jilin Normal University, Siping 136000, China

Received Date: 29 November 2006

Stannous oxalate was prepared efficiently and characterized by XRD and FT-IR. It exhibited higher catalytic activity and had profitable effect than tetrabutyl titanate and stannous octoate for the synthesis of polytrimethylene terephthalate (PTT) via esterification-route. Over this catalyst, the degree of esterification of pure terephthalic acid was up to 94.4% at 260℃ after 1.5 h, while the intrinsic viscosity and content of terminal carboxyl groups of the corresponding PTT polyester, polymerized at 260℃, 60 Pa for 2 h, was 0.8950 dL/g and 15 mol/t, respectively. Stannous oxalate was a promising catalyst for the synthesis of PTT polyester.
- Polytrimethylene terephthalate,
- Polyester,
- Stannous oxalate,
- Esterification-route,
- Intrinsic viscosity
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